piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ b3e591dca1a7343a49bc949e8f75a242efb7fb72

Alexander Færøy 236cf49670 Add stub function for libor-trace.		7 anni fa
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debug.h	cb8ac1f331 trace: Add a basic event-tracing infrastructure.	7 anni fa
events.h	cb8ac1f331 trace: Add a basic event-tracing infrastructure.	7 anni fa
include.am	236cf49670 Add stub function for libor-trace.	7 anni fa
trace.c	236cf49670 Add stub function for libor-trace.	7 anni fa
trace.h	236cf49670 Add stub function for libor-trace.	7 anni fa